Typewriting machine



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E E HESS TYPEwRTING MACHINE Filed NOV. l2. 1921 Ww ,N

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Iliff wsu ,/NJL-TTAN BEACH, NEVI" YORK, .SSIGNOR T0 ROYAL TYE- C', NC., OF NIEVE 'YGZ-K, E. Y., A ELPORATLON GF NEW YORK.

To all whom may; mmc/m.

Be it known that i., EDWARD B. Huss, e citizen ot the United States, residing; at ivionhotton Beach, in the county of Kings, iew York, and State of' New Yorin have invented certain new und useful improvements in 'lype'nfriting ldechines, ci: which the 'following is o specification.

rhis invention relates to typewriting machines of the iront'- strike Yvisible kind and shown in my Potent No. 1,390,708, of September i3. 'lJQL in which provision is made for reducing the noise mede by the impact ot 'the type on the platen. This is acc-oinplishcd described in said patent, by censing each type har to he rmiyed, by the depression of o key, to :L point considerably in advance of the pieten,l the JEucther movement of the type har to thc platen. being caused hy the momentum. of the type bar. The mechanism shown in said patent is such that when o, key is depressed to its full extent the associated type. bar is carried to al predetermined point in front of the "laten when the momentum period begins, at which time certain members. of the action ere in e demi-center or toggle-locking position. During this momentum period, after the deed-center position. is passed., the depr seed key has a short return or upward Inovernent which is resisted lhy the tin-ger ot thc operator. @n the return of the typo bei" thc key lever is raised to normal position.

@recording to my present invention 'i so niodii'y the mechanism that While the typeiiars are properly brought to the moment-nin periodv hy the depression 'oft the ltoys, the return movement ot the keys during tho. momentum period is evoidi-id, certain niet of the notion being extended to permit the type hers to proceed to the.

pi 'on other the dead-center position ot ports o. the mechanism has been reached. in this Tiwy the key levers are cushioned and c very light and delico-te touch is n'iiorded.

The escapement mechanism is operated during tf. e latter port of the movement oft type hairs oy improved mechanism whereby double printing is avoidedq and the speed ot operation-is increased. One Way of embodying my improvements is shown in theeccomponying drawings, in which,

Figure l is a, View, partly in section and partly in side elevation, of ports ot e typetype Application filed November l2, 1921.. Serial ll'o. $51,756.

Writing* machine with my improvements :1p1

the parts shown being .in the position Whichthey assume when the type oer has reached the printing point and theJ esca-pement oper- 'at/ed. perticnlarly to type actions 0i" the kind' A portion of typewriter carriage is indicated et A, and B indicates e platen. C indicates a type oer segment and D o type her guide. t] indicates part of the ribbon vibrator devices Escepement mochanisnris indicatedv et F. G indicates e key lever and H a type har. The segment is, as usul, semi-circuler and the type bars are pivotally connected therewith et c, While the outer ends off/thc. type bers are normally supported in e cushioned type hor rest I., The key levers ee pivotslly mounted in c, freine J at g,' and their 'upward movement is limited hy e cushioned sto .K. Front links or levers N are pivotaly' connected with c treme M, and these links or levers are link-connected as ,shown at n with the key levers G. The heels, of the type bars are connected 'with the v.rear ends of the lovers N by link members 0. Those members are connected' at o -to the levers N und et of to the heels of the type hors.l Each member comprises a, cios'ed closely Wound coiled spring o2, the opposite ends of which are connected with'short rods of. The ports are so adjusted the', normally when the key levers are in normal position the members occupy the position shown in Fig. l. W-hn e ,hey lover is depressed the pertsere moved to the position shown by the line as in Fig. l. This is done Without stretching or extending the member and at that time the pivot points o7 o and o are in a strftight line with each other-that is, in o deodccnter or@ toggle-locking position and the vher reaches the position H' which is e considerable distance from the platten.` The key lever con, however, be further depressed h); the operator, out in doing so the spring o2 is extended, stretched or lengthencd and et the some time the type oa-r is carried by its momentum to the dotted line position in Fig; l.. This also stretches the spring 02. it wili. thus he seen that the spring'o2n0t only permits the type bar to pass to the print- K che erin V n g andthe piate chen-Jed to vary the izension of ehe springsy ing point from its position E', but it also ermis the keyie'ver to be urher depressed if the operator so desires. In Ithis Way the hey is cnsbioned, which is a desirable 'fea-ture in typewriting machines.

The expression extensibie member or member of variable length is used to designate a form of connection in which the actual lengih of the member is varied or in which ,A universal bar is mounted below and in rear of the heels'ooiv the type barsi This universelber consists of e. rock-shaft R., mounted in brackeis T, which may be suppori/ed on she main frame of rho machine.

' The rocieshafi cerries azins"r,'=which are rod S.

connected et their. fronif endsby Links/P are connected vro the heels of the type bars and have looped ends p, through which the rod S entends. Eech link P is siirounded by a coiied .spring p. Vwhich is attached to e. pieteV Q, carried by arms q depending1 ,icoseiy from the rock-shaft R. U indicates one ofthe cani disks which enan anni g b, means of 'which seid arm w may have their posijiion gi, ai of, which are connccedro seid plate and may hns be colleetiveiy adjusted. 'lhe arms '7 .engage 'the cem vdisais U when ln'icved downwerdiy, and thus their downl werd movemen is .iimied As shown, when the ype bers are at resi; the closed ends of the ilnirs P do no?, operatively engage he rod S. V? hen the type bars are raised to lie position H in Fig. 1, the iower rear ciosed ends of the links come in contacr, with. the rod S. lWhen ehe type bars move vto the printing point the links, being operatively engaged wiii @he rod S, cause Che universal bar wie be rocked.

The rock-shaft R carries en erm i7 which operstes the escepemene.- This arm, near iis upperend is connected spring c, the front end of nich is connected with e, piace e', depen from bhmsegment C. This spring; iy hoids the upper end of ri nom the escapemeni, mecir, enism end eine holds he arms i" and che rod in iower position. 'The escapement mechanism is in gener-ni similiar to that nsueiiy empioyed on the Royai typewriibingy .mechine The :racir oar is indicated at if?. T

V7 indicnes escapemen; wheei and W2 e pinion engaging 'he rack bar. F indicates roiler dog carried by rile rocker l. ndi-venir and F2 indicates a iimber or spacing dog. The rocker plate is pivoteily connected with the escepement frame et f3 and s spring f connected with the rocker plate and with the A frame F normally yholds the rocker plate and the fixed dog in the position shown in Fig. l. rihe rearward movement of the upper part of the rocker plate is limited by an edjustment screw f4: The rocker plate carries a.

,roller carryin i spring arm f', the position of which may' c adjusted by screw f2. The devices are so organizedA that normally the fixed roller carrying" dogn F engages the cscapement wheel and when ahc escepemen; mechanism is operated by ehe universal bar the iixed dog leaves the escapementwheel and the limber dog is brought into lengagement therewith, quickly turns on ifs pivot' and the carriage advances one space; In

Ahis way l provide what is known as o reverse or speed escape/ment. inasmuch as 'che' 'cscapenient isoperated lduring the iateer part of themovei'ncni; of the type bars che danger or" `double printingI is avoided and theispeed of operation is increased'es ehe carriage is vouiclriy released as soon as the fixed dog is disengaged from the escapement wheehthe distance moved by rthe carriage being deem-mined by the imber dog.)

f7 is a. limiting stop to prevent overthrow of the escapemeniJ rocker plate. This invention is noi; limited to .the use of a reversc er speed device, as the escapement niechanism usually 'employed in Royal typewritingF machines give en acceptable result.

ii ciaim as my invention:

1. in a typewriting machine the combination with n key lever and a type bar of connections therebetween, inciuding'e niember of variable iength, for moving the type bar, Lkey, to a predetermined positionin front of the platen, the further movement of the type bar to the platen being caused by the momenfum thereof, duringwhich movement the key may receive a further depression due fo the variation in lengthl of said member.

2. fin a typewriiing` machine the combination with a igey lever end a type bar of connections therebetween, including a member of variable length. for moving 'the type bar, by the depression ofthe key, to a predccrmined position in front of the laten, the further movement of 4elle type iiar to the piaen being; caused by the momentum thereof during which momentum period the iengizii of said member is increased.

3. l'n a typewriting machine the combination with a key lever and a type bar of iinic connections jtherebetween, inciudinp; a member of variable length, for moving` he iype bar, by he depression of ics by the fuli operative depression of the,

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ci the paen, the further movement of the mounted-to .move about e fixed axis end )connections therebetween,

4type bnr to the platen being tensed by the momentum thereof, during which momentum period the 'lengthy of said member is increased. Y i A f 4. In e typewritng machine the combinetion with e key lever and a type bor, of link including e member of variable length, formoving the type bar, by the depression 'of the key to e predetermined position in front of the platen and atie' considerable dist-ence therefrom, the `further,movement of the type bar to the pletenbeingjceused by the momentum thereof, durin' which momentum period the link'sfere brought past e deed center positionfand the length of seid member is varied. i A.

5. in etypevvritingl mechine the combinm'tionwith'e, key lever and e, type bar of connections therebetween, comprising e, link Which'is link-connected to the key lever, and en extensiblelin'k"connecting, said first-mentioned linkto the'lie'ei of the type bar, seid connections being'opereted by the depression of the keyy to move the type ber to a predetermined .positioniconsiderably in edvence of the pletenjthe further movement momentum stretched.

oi' the type ber to thepleten being caused4 by the momentur'njthereolf: during .which period the extensible member is v.6.ln e typeWrtingm'chine the combi notion with e ke levernnd e type 4bei of connections there etween, including e, member of verieble length, for 'moving the type bei', by the depression of the key, to n predetermined position considerably mere than in front ofthepleten, the further move ment of the type ber-to the'pleten being caused by the niomentum-thereof (hiring,r which momentum period the length of seid member is increased and the key lever may be further depressed.

7. In e typewritingy machine the combination 'with n'key lever and e type bei' of connections therebetween, including an extensible link'oonnected with the heel oat seid link being connected with the key lever sind being moved'by the depression of the key sueiently to eerry the type bar to e position considerably in advance of the platen, the further movement of the type ber to the pieten being caused by the momentum thereof during which momentumperiod the extensible linhr is stretched.

8. In e typewriting machine the combination with the pi'voted type'bar end the key lever for operating them, ment, a universel ber comprising n, rock shaft, e vertically arranged arm for operating the escepement, e' horizontally er ranged `rod supported on the rock shaft, e spring for holding the erm in normelposition, a, link connected with the type ber and having e lost motion connection with the rod, e s rin of the type er or returning it to normel position, end Ineens for sion of seid springs. i y

9, In e, typewrlting machine the 4combination with, e. lrey of connections therebetween, including e, link: formed as e single unitary extensible mein ber, for moving the type bar, by the de` pression of the key, to e predetermined position in ,front of the platen, the further#A movement v beingcnsed by the momentum thereof dune? ing whieh momentum member is stretched.

l0. in e'typewriting machine the coznisii'-l i notion with o key lever and e type berot' connections therebetween including e; link comprising e, closely coiled spring, for moi/"Illing the type ber, by the depression off-the. key, to o predetermined position in front .m'

caused of the pieten, the further movement-oi the. type ber to the platen being momentum thereof during which momentum" 1 period the coiled spring is stretchedr.,l

In testimony whereof, l `lleve hereunto subscribed my neme.

connected with the heel u 1 7G adjusting the ten- Y' y of the type bar tothe pieten;l

of en escepelever end n type ber l period the extensible`- l.

envenene. 'nenefsfI f' 

